When The Expendables 3 cast additions were announced, they were mighty impressive: Ford (Han Solo/Indiana Jones), Gibson (Mad Max/Braveheart), Banderas (Desperado/Zorro) et al. All guys with a proven action track record and therefore kind of obvious, if total fantasy, candidates to sign up. But what if along with these stars, you’d had Jack Nicholson? That’s right, Jack Nicholson.